FIELD: transport.
SUBSTANCE: proposed device compares readings of two pickups arranged to adjoin the scraper conveyor chain to register the chain breakage at slipping off the driven sprocket getting to conveyor upper flight. Chain breakage detected, conveyor can be automatically stopped with the help of face scraper conveyor control device to prevent further damage and to warn the operators about necessity in chain repair.
EFFECT: better control and adjustment of chain tension.
21 cl, 11 dwg
